By Tim Kowols
Despite the efforts of local groups, dead zones are showing no signs of leaving the Bay of Green Bay. Dead zones develop when excess nutrients enter the bay from watersheds and cause algae to bloom. This takes away critical oxygen from the water to help sustain other forms of life. Efforts from the Save the Bay Initiative and other groups have helped stir up conversation and institute new practices like buffer zones between farm fields and water streams. Clean Water Action Council Wisconsin Executive Director Dean Hoegger says something more drastic needs to occur before more progress can be made.
Oxygen levels in the water take a particular beating during the summer according to the USA Today Network- Wisconsin. Days of depleted oxygen levels have jumped to 23 percent recently compared to statistics from the 1980s and 1990s where it stood at just 13 percent.